In a round-up earlier this month of great amenities introduced at U.S. airports during 2014, we left out the virtual library at Philadelphia International, the customer service robot introduced at Indianapolis International Airport, the snacks and other grab-n-go items in the "At Your Service" cart that airport vendor Paradies now rolls over to "gate huggers" in hold rooms at Palm Beach International Airport in Florida and California's John Wayne Airport, and the twice-weekly farmers market that pops up post-security at Portland International Airport.

And while several airports shared news of fresh amenities they are proud to have brought to travelers this past year, we also wanted to call out some of the services airlines have contributed to improve the passenger experience on the ground.

In November, for example, JetBlue partnered with CoatChex to open a permanent, ticketless coat-check kiosk in Terminal 5 at JFK International Airport. The service, which should appear at other airports in 2015, eliminates a claim check by using an app that "tracks passenger return time and return date while simultaneously tagging a picture of them and their coat," said Eric Loos, CoatChex vice-president of operations.

This past year United Airlines began a project to install 500 charging stations in the customer seating areas in airports it serves. "This is on top of the 375 we installed specifically in Boarding Area E at SFO," said airline spokesman Luke Punzenberger. United also expanded the chauffeured Mercedes-Benz tarmac transportation service for top frequent fliers from Chicago and Houston to all of its U.S. hub airports.

During 2014, American Airlines and US Airways co-located operations at more than 80 airports, "improving our customers' travel experience and providing easier connections between American and US Airways flights," said airline spokesman Matt Miller. American also launched a ramp transfer service with Cadillac to transport (very special) customers from gate to gate at LAX, DFW, JFK and LGA airports.

In November, Delta Air Lines rolled out updated and improved gate information display systems in 34 airports. "The new design offers an uncluttered presentation matching Delta's other digital channels including delta.com, airport self-service kiosks and the Fly Delta app," said Delta spokesman Paul Skrbec, "Design experts focused on providing information that customers wanted most while also rotating important Delta product and travel information."

In October, when the Wright Amendment was lifted, Virgin America shifted its operations from DFW International Airport to the rebooted Dallas Love Field and opened a First Class Check-in Lounge (the airport's first) in the ticket lobby. The airline also gave its gate areas the "Virgin" treatment with a classic red London phone booth and wall filled with photos from the Virgin brand history.

To go along with its new logo and livery, during 2014 Southwest Airlines created "a whole new airport experience," said company spokesman Dan Landson. And in September, the Southwest areas of Dallas Love Field were the first to receive the makeover, with new airport way-finding signs and updated ticket counters, gates, kiosks and information displays.

And during 2014, both Alaska Airlines and Hawaiian Airlines made advances in programs that allow customers to print their boarding tags at home, insert the tags in reusable bag tag holders, and cut down the check-in time at the airport. Alaska has a long list of cities where passengers may now tag their bags at home, while a Hawaiian Airlines spokesperson said that after a 60-day home bag-tag pilot program, the airline is "in the process of evaluating the possibility of wider use."

Some airlines and airports have already shared news of amenities and services they plan to add in 2015, but there's always room for improvement. So please add your suggestions for the fresh amenities you'd like see in airports in the comment section below.